Related Experiment Video
Updated: May 19, 2026
05:54
Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
Published on: October 18, 2018
Association between reading speed, cycloplegic refractive error, and oculomotor function in reading disabled children
Patrick Quaid1, Trefford Simpson
1IRIS The Visual Group, Guelph, Ontario, Canada. ptquaid@sciborg.uwaterloo.ca
Summary
Students with reading difficulties and an Individual Education Plan (IEP) show significant differences in vision compared to controls. Comprehensive eye exams, including binocular vision assessment, are recommended for these students.
Area of Science:
- Ophthalmology
- Developmental Optometry
- Educational Psychology
Background:
- Many students (6-16 years) have Individual Education Plans (IEPs) for learning disabilities, often related to reading.
- The links between reading performance, refractive error, and binocular vision are not well understood.
Purpose of the Study:
- To investigate the relationship between objective reading measures, refractive error, and binocular vision in students with and without IEPs.
- To determine if specific visual function deficits are associated with reading difficulties in students requiring IEPs.
Main Methods:
- Compared 50 students with IEPs (reading difficulties) to 50 controls (age 6-16).
- Conducted comprehensive eye exams including cycloplegic refraction and binocular vision assessments (vergence, accommodation, stereopsis, symptoms).
- Utilized the Visagraph III system for objective reading speed and eye movement analysis.
Main Results:
- Students with IEPs exhibited significantly higher hyperopia than controls.
- Vergence facility was significantly reduced in the IEP group and correlated with reading speed, eye movements, and symptoms.
- Significant differences were observed in multiple other binocular vision measures between groups.
Conclusions:
- Strong associations exist between reading speed, refractive error, and vergence facility in students.
- A full eye examination, including cycloplegic refraction and binocular vision evaluation, is crucial for students identified with reading-specific IEPs.
